ANAS. 20 
“I 
ANAS, 
Anas, Linn. Syst. Nat. i. p. 184 (1766) ; Salvad. Cat. Birds Brit. Mus. xxvii. p- 187 (1895) 
This genus includes the typical Ducks, which have the outer web of the primaries 
blackish, the inner one drab with a blackish tip (cf. Oates, ‘ Manual of the Game-Birds 
of India,’ ii. p. 21). The bill is broad and of the same width throughout, and equals 
the head in length; the lamelle are scarcely exposed. The sexes differ markedly in 
colour, and the upper wing-coverts are never blue. The wing is similarly coloured, and 
has a brilliant speculum, in both male and female. 
Sixteen species of Anas are known, of which three are found in Central America. 
/1. Anas boscas. 
- Anas boschas, Linn. Syst. Nat. i. p. 205'; Licht. Preis-Verz. Mex. Vig. p. iii, no. 1572; Cab. 
J. £. Orn. 1863, p. 59°; Wagl. Isis, 1831, p. 5324; Lawr. Ann. Lye. N. York, viii. p. 13°; 
Mem. Bost. Soc. Nat. Hist. ii. p. 314°; Dugés, La Nat. i. p, 1437; Scl. & Salv. P.Z.S. 
1876, p. 880°; Sumichr. La Nat. v. p. 234°; Baird, Brewer, & Ridgw. Water-Birds N. 
Amer. i. p. 491"; Ridgw. Pr. U.S. Nat. Mus. ix. p. 173"; Herrera, La Nat. (2) 1. 
pp. 187", 828%; A.O. U. Check-]. N. Amer. Birds, 2nd ed, p. 48 ™. 
Anas boscas, Salvad. Cat. Birds Brit. Mus. xxvii. p. 189”. 
Anas maxima, Scl. P. Z. 8. 1859, p. 369. 
Capite et collo superiore lewte nitenti-viridibus, hoc torque albo interrupto ornato; interscapulio et scapularibus 
griseis, brunneo tinctis et minute vermiculatis; dorso medio saturate brunneo; uropygio et supracaudalibus 
nigris ; alis cinerascenti-brunneis, speculo alari secundariorum purpurascenti-cyaneo metallice nitente, 
fascia subterminali alba ante apicem nigrum; tectricibus alarum majoribus et secundariis griseis, albo 
nigroque fasciatim terminatis; secundariis intimis extus partim lete brunneis; rectricibus griseis albo 
marginatis, pennis 4 medianis recurvatis nigris; gutture nitenti-viridi, pectore summo saturate castaneo, 
corpore reliquo subtus grisescenti-albo, fasciis angustissimis saturate brunneis vermiculatim transfasciatis ; 
subcaudalibus nigris; subalaribus et axillaribus albis: rostro flavescenti-olivaceo, apicem versus nigro, 
mandibula ad basin rufescenti-flava; pedibus aurantiacis; iride brunnea. Long. tota circa 24-0, 
ale 10°5-11°5, caude 4:4, culm. 2:2, tarsi 1:85. (Descr. maris adulti ex Corpus Christi, Texas. 
Mus. nostr.) . 
Q. Supra saturate brunnea, plumis singulis brunnescenti-fulvo marginatis ; corpore subtus fulvo, saturate 
brunneo striolatim maculato ; mento, gutture et prepectore fulvescentibus concoloribus ; ala fere ut in 
mari colorata. (Descr. femine adults ex Corpus Christi. Mus. nostr. ) 
Juv. femine similis. Mas junior pectoris plumis saturatius indicatis distinguenda. 
3 ad. in ptilosi vera estiva femine adulte similis, sed pileo nigricante, et fascia sordida oculum 
transeunte. 
Hab, Nortu America, breeding southward to the Southern United States; less 
common in the Kast 4—Mexico (Deppe & Schiede2*, Wagler +), Hermosillo, 
Sonora (ferrari-Perez'*), Rio San Pedro, Rio Janos, Rio Conalitos (Kennerly !°), 
Mazatlan (Grayson °), Guanajuato, Guadalajara (Dugés7), Valley of Mexico 
(Herrera? 8, Sumichrast °), Jalapa (de Oca 16); PANAMA (M‘Leanann’ *),—W est 
Iypies °.—Evrope AnD Nortuern Asia, rarely north of the Arctic Circle, in winter 
to Northern and North-eastern Africa ; Nortuern Inpia; Carna anp Japan ), 
